Investments in Unconsolidated Entities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Jan. 31, 2013
Reconciliation of members' and partners' equity to the Company's Carrying Value
Total members’ and partners’ equity	$ 798,590		$ 637,341
Equity of other members and partners	777,646		662,358
Company’s net investment in unconsolidated entities	20,944		(25,017)
Basis differences	137,259	[1]	114,215	[1]
Advances to and on behalf of affiliates	32,119		74,703
Assets - Investments in and advances to unconsolidated entities	447,165		456,628
Liabilities - Cash distributions and losses in excess of investments in unconsolidated entities	(256,843)		(292,727)
Total Investments in Unconsolidated Entities, net	$ 190,322		$ 163,901

[1] Represents the aggregate difference between the Company’s historical cost basis and the basis reflected at the equity method venture level, which is typically amortized over the life of the related assets or liabilities. Basis differences relate to certain acquisition, transaction and other costs, as well as other-than-temporary impairments that are not reflected in the net assets at the equity method venture level.